Spray device for generating foam

Abstract

A spray device for generating foam includes a container provided for receiving liquid, a spray element mounted on a top of the container, a guiding tube extending into an interior of container, and a pressurizing element mounted on the container. The spray element has a guiding channel defined therein. The guiding tube is connected with the guiding channel. The guiding tube has an air hole laterally defined therein and positioned adjacent to the guiding channel. The pressurizing element is manually operated to aerate air into the container to compress the air in the container for pushing the liquid spraying from spray element via the guiding tube.

1 . A spray device for generating foam comprising:
 a container provided for receiving liquid;   a spray element mounted on a top of the container, the spray element provided for controllably spraying the liquid, the spray element having a guiding channel defined therein for guiding the liquid outward;   a guiding tube mounted in the container and extending into an interior of container for exhausting the liquid from the container, the guiding tube connected with the guiding channel, the guiding tube having an air hole laterally defined therein and positioned adjacent to the guiding channel; and   a pressurizing element mounted on the container, the pressurizing element manually operated to aerate air into the container to compress the air in the container for pushing the liquid spraying from spray element via the guiding tube;   wherein when the liquid is sprayed from the spray element, the compressed air is aerated into the air hole and mixed with the liquid flowing in the guiding tube to generate foam.   
     
     
         2 . The spray device for generating foam as claimed in  claim 1 , wherein the spray element has a head, a diverting tube mounted on the head, and a nozzle tube sleeved on the diverting tube, the guiding channel formed in the diverting tube and the nozzle tube and extending into the head. 
     
     
         3 . The spray device for generating foam as claimed in  claim 2 , wherein the container has an outer threaded section formed on an outer periphery of the top thereof, the head having an inner threaded section formed on a bottom thereof for corresponding to the outer threaded section of the container, the spray element having a movable valve mounted on the head thereof for sealing/unsealing the guiding channel, the movable valve including a valve head mounted in the head for selectively sealing a part of the guiding channel which is positioned between the head and diverting tube, a spring mounted in the head and abutted against the valve head for keeping the guiding channel sealed, and a knob pivotally mounted on the head and connected with the spring to selectively drive the valve head backward for unsealing the guiding channel. 
     
     
         4 . The spray device for generating foam as claimed in  claim 3 , wherein the diverting tube has a through hole radially defined therein, the through hole positioned in the nozzle tube, the guiding channel extending from the head to the nozzle tube via the through hole, the nozzle tube having a diffuser mounted therein and positioned in the guiding channel for disturbing the liquid to generate foam. 
     
     
         5 . The spray device for generating foam as claimed in  claim 3 , wherein the pressurizing element including an inner tube mounted in the container and extending into the interior of the container and a pumping rod mounted in the container and partially received in the inner tube, the pumping rod being movable relative to the inner tube, the pumping rod having an upper flange radially formed on a bottom thereof and a lower flange radially formed on the bottom thereof adjacent to the upper flange, a pumping hole defined in a lateral of the pumping rod and passing through the pumping rod, an elastic ring annularly sleeved on the pumping rod and movably positioned between the upper flange and the lower flange for engaging with an inner periphery of the inner tube, the pumping rod positioned between the upper flange and the lower flange, a plug mounted in a bottom distal end of the pumping rod. 
     
     
         6 . The spray device for generating foam as claimed in  claim 1 , wherein the head has a handle extending therefrom and downwardly bended. 
     
     
         7 . The spray device for generating foam as claimed in  claim 1 , wherein the air hole in the guiding tube has a diameter being 1.2 mm. 
     
     
         8 . The spray device for generating foam as claimed in  claim 1 , wherein the diffuser is presented in the form of a fabric, a paper, a net, or a material which has a plurality of apertures.